The core of a vacuum cream jar lies in its "piston-driven mechanism," which utilizes a screw rod at the base to propel an inner tray upward, ensuring the product remains in constant contact with the dispenser opening and preventing air from entering.
Traditional wide-mouthed jars expose their contents to oxygen and bacteria every time they are opened and closed-making them prone to oxidation and spoilage-whereas the vacuum design effectively isolates the product from contaminants, thereby extending the stability and shelf life of the skincare product's active ingredients.
Originally adopted within the realm of high-end cosmetic packaging, this structural design has now gradually become widespread in everyday skincare routines; it is particularly well-suited for carrying high-value products such as serums, face creams, and eye creams.
